Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 165 · 40 questions

The fast method (Casting out nines): Find the nine-check number of each number: add the digits until one digit is left. Do the same sum (× or +) with those digits and shrink the result to one digit too. Shrink the given answer. Different → wrong. Same → it passes the check.

1. 1.Check with nines: 538 + 684 = 1222. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 21 × 57 = 1197. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 574 + 838 = 1406. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 49 × 52 = 2542. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 56 × 50 = 2800. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 164 + 396 = 560. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 29 × 71 = 2053. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 27 × 77 = 2079. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 92 × 49 = 4512. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 17 × 68 = 1156. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 99 × 18 = 1782. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 33 × 79 = 2607. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 94 × 15 = 1410. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 859 + 313 = 1172. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 28 × 51 = 1428. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 829 + 410 = 1231. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 29 × 24 = 702. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 437 + 140 = 577. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 92 × 41 = 3774. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 47 × 58 = 2725. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 311 + 790 = 1101. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 28 × 49 = 1379. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 41 × 77 = 3162. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 900 + 908 = 1808. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 45 × 62 = 2794. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 90 × 48 = 4317. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 37 × 69 = 2545. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 796 + 263 = 1066. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 21 × 23 = 483. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 82 × 60 = 4920. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 89 × 12 = 1062. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 642 + 237 = 873. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 335 + 239 = 574. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 57 × 66 = 3762. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 83 × 63 = 5235. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 28 × 91 = 2556. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 24 × 73 = 1754. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 187 + 276 = 463. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 679 + 857 = 1537. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 67 × 71 = 4757. Correct or wrong? (a) wrong (b) correct

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths